Steel pipe utility pole maintenance self-locking ladder

Abstract

A kind of steel pipe pole maintenance self-locking ladder, relate to a kind of steel pipe pole ladder, the two ends of C-shaped self-locking socket part are respectively provided with outer bending plate, the C-shaped self-locking bottom of the inner face with rubber plate is provided with interval, the end surface formed by the interval of C-shaped self-locking bottom is respectively fixedly connected with the one end of two straight boards, the two sides of stud with sleeve are respectively worn in the middle hole of two straight boards, the spring and nut are respectively sequentially worn in the outside of two straight boards of stud, the other end of two straight boards is respectively hinged with the upper end of ladder rod by hinge shaft;Multiple support rods are respectively arranged on the two sides of foot pedal rod;The C-shaped self-locking socket is locked on the upper end of steel pipe pole by spring in the application, and the instability of ladder rod is prevented by support rod, and the problem that steel pipe pole is difficult to climb is solved.

Description

Technical Field

[0001] This invention relates to a steel pipe utility pole ladder, and more specifically, to a self-locking ladder for the maintenance of steel pipe utility poles. Background Technology

[0002] Originally, utility poles were made of wood. With the development of the steel and reinforced concrete industries, cement poles gradually replaced wooden poles. Currently, underground cables are used on main urban streets to deliver electricity to households. While cement poles are still used in some back streets and alleys, steel pipe utility poles are gradually replacing them as street lighting projects progress. Steel pipe utility poles are particularly advantageous due to their greater versatility and multi-purpose use compared to cement poles, especially in newly built large factories where they are used more frequently. However, the drawback of steel pipe utility poles is their small diameter, which makes it impossible to use the foot clamps commonly used on cement poles. Furthermore, the installation of steel pipe utility poles is mostly carried out in the early stages of a project, making it difficult for vehicle-mounted lifting platforms to access the construction site. This results in slow progress in the installation of equipment and maintenance of lines on the upper part of the steel pipe utility poles. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing solutions by disclosing a self-locking ladder for the maintenance of steel pipe utility poles. This ladder utilizes a spring to lock a C-shaped self-locking clip at the upper end of the ladder pole, and a support rod prevents instability of the ladder pole, thus solving the problem of the difficulty in climbing steel pipe utility poles.

[0004] In order to achieve the objective of this invention, this application discloses the following technical solution: A self-locking ladder for maintaining steel pipe utility poles includes a C-shaped self-locking clip, a rubber plate, straight plates, double-ended bolts, sleeves, springs, nuts, hinge shafts, ladder rods, foot pedals, and support rods. The C-shaped self-locking clip has externally bent plates at both ends. The bottom of the C-shaped self-locking clip, which has a rubber plate on its inner surface, has a gap. One end of each of the two straight plates is fixedly connected to the end face formed by the gap at the bottom of the C-shaped self-locking clip. The double-ended bolt, with a sleeve in the middle, passes through the holes in the middle of the two straight plates on both sides. Springs and nuts are sequentially fitted onto the outer sides of the two straight plates of the double-ended bolt. The other ends of the two straight plates are hinged to the upper end of the ladder rods via hinge shafts. Multiple spaced support rods are provided on both sides of the foot pedals.

[0005] The aforementioned self-locking ladder for maintaining steel pipe utility poles has retaining rings between the two springs and two nuts of the double-ended bolt.

[0006] The self-locking ladder for maintaining steel pipe utility poles has a gap at the bottom of the C-shaped self-locking clip, which forms two quarter-circular plates. Inner bending plates are provided at both ends of the opening of the two quarter-circular plates, and outer bending plates are provided at the outer ends of the inner bending plates.

[0007] The self-locking ladder for maintaining steel pipe utility poles has a flat surface from the middle of the two rubber plates on the inner side of the C-shaped self-locking clip to the opening of the C-shaped self-locking clip, and an arc surface at the interval between the middle of the two rubber plates on the inner side of the C-shaped self-locking clip and the bottom of the C-shaped self-locking clip.

[0008] The self-locking ladder for maintaining steel pipe utility poles has two straight plates whose other ends are fixedly connected to one end of two inclined connecting plates, and the other ends of the two inclined connecting plates are respectively connected to one end of two connecting straight plates. The other ends of the two connecting straight plates are respectively hinged to the upper end of the ladder rod through hinge shafts.

[0009] The self-locking ladder for maintaining steel pipe utility poles has two connecting straight plates whose other ends are fixedly connected to one end of two fixed plates via hinge shafts. The opposite surfaces of the two fixed plates are fixed to the two sides of the sleeve pipe. The sleeve pipe is fitted onto the upper end of the ladder rod, and two upper fixing screws pass through the through holes set on the sleeve pipe and the through holes set on the upper end of the ladder rod, respectively, and are then locked by nuts.

[0010] The self-locking ladder for maintaining the steel pipe utility pole includes an upper ladder and a lower ladder. The lower end of the upper ladder is fixedly connected to the upper end of the lower ladder, and the lower end of the lower ladder is fixedly connected to the middle of the upper surface of the support rod.

[0011] The aforementioned self-locking ladder for maintaining steel pipe utility poles has a central connecting rod at the upper end of the lower ladder rod. The central connecting rod is inserted into the lower end of the upper ladder rod. Two fixing screws pass through the central through hole at the lower part of the upper ladder rod and the central through hole on the central connecting rod, respectively, and are then locked in place by nuts.

[0012] The aforementioned self-locking ladder for maintaining steel pipe utility poles has a lower insertion rod in the middle of the upper surface of the support rod. The lower insertion rod is inserted into the lower end of the lower ladder rod, and is locked by a nut after passing through the lower through hole in the lower part of the lower ladder rod and the lower through hole in the lower insertion rod, respectively.

[0013] The aforementioned self-locking ladder for maintaining steel pipe utility poles has a rubber surface on the lower part of the support rod.

[0014] Based on the above disclosure, the beneficial effects of the present invention are: The self-locking ladder for maintaining steel pipe utility poles described in this invention utilizes support rods installed at the lower ends of the upper and lower ladder rods, which are close in height to the steel pipe utility pole, to achieve stability. A C-shaped self-locking clip is secured to the upper side of the steel pipe utility pole by a spring, effectively overcoming the drawback of slow climbing in existing methods and solving the problem of difficulty in climbing steel pipe utility poles. This invention facilitates various operations on steel pipe utility poles in locations inaccessible to vehicle-mounted lifting platforms used for maintenance. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2This is a schematic diagram of the self-locking part of the present invention; Figure 3 This is a schematic diagram of the three-dimensional assembly structure of the upper and lower climbing ladder rods of the present invention; Figure 4 This is a schematic diagram of the three-dimensional assembly structure of the lower ladder rod and support rod of the present invention; In the diagram: 1. Rubber plate; 2. Fixing plate; 3. Sleeve; 4. Upper fixing screw; 5. Hinge shaft; 6. Spring; 7. Nut; 8. Quarter-circular plate; 9. Foot pedal; 10. Upper ladder rod; 11. Lower ladder rod; 12. Support rod; 13. Rubber surface; 14. Lower fixing screw; 15. Outer bending plate; 16. Inner bending plate; 17. Sleeve; 18. Double-ended bolt; 19. Spacing; 20. Slanted connecting plate; 21. Connecting straight plate; 22. Straight plate; 23. Retaining ring; 24. Middle fixing screw; 25. Middle through hole; 26. Middle insert rod; 27. Lower through hole; 28. Lower insert rod. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the inventive objectives, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of possible implementations of the technical solutions of the present invention.

[0017] Combined with appendix Figures 1 to 4 The self-locking ladder for maintaining steel pipe utility poles described herein includes a C-shaped self-locking clip, a rubber plate 1, straight plates 22, double-ended bolts 18, sleeves 17, springs 6, nuts 7, hinge shafts 5, ladder rods, foot pedals 9, and support rods 12. The two ends of the C-shaped self-locking clip are respectively provided with outer bending plates 15. The bottom of the C-shaped self-locking clip with the rubber plate 1 on the inner surface is provided with a gap 19. One end of each of the two straight plates 22 is fixedly connected to the end face formed by the bottom gap 19 of the C-shaped self-locking clip. The double-ended bolts 18, with sleeves 17 in the middle, pass through the holes in the middle of the two straight plates 22 on both sides. Springs 6 and nuts 7 are sequentially fitted on the outer sides of the two straight plates 22 of the double-ended bolts 18. Retaining rings 23 are provided between the two springs 6 and the two nuts 7 of the double-ended bolts 18. The two springs 6 are high-strength springs. The other ends of the two straight plates 22 are respectively hinged to the upper end of the ladder rods via hinge shafts 5. Multiple spaced support rods 12 are provided on both sides of the foot pedals 9.

[0018] Combined with appendix Figure 1Alternatively, 2, the bottom of the C-shaped self-locking clip has a gap 19, which forms two quarter-circular plates 8. Inner bending plates 16 are respectively provided at both ends of the opening of the two quarter-circular plates 8, and outer bending plates 15 are respectively provided at the outer ends of the inner bending plates 16. The middle of the two rubber plates 1 on the inner surface of the C-shaped self-locking clip is flat from the middle of the middle of the two rubber plates 1 to the opening of the C-shaped self-locking clip, while the inner surface of the middle of the two rubber plates 1 on the inner surface of the C-shaped self-locking clip to the gap 19 at the bottom of the C-shaped self-locking clip is an arc surface. The other ends of the two straight plates 22 are respectively connected to the two oblique connecting plates 2. One end of the two inclined connecting plates 20 is fixedly connected, and the other ends of the two inclined connecting plates 20 are respectively connected to one end of the two connecting straight plates 21. The other ends of the two connecting straight plates 21 are respectively hinged to the upper end of the climbing rod through the hinge shaft 5. The other ends of the two connecting straight plates 21 are respectively fixedly connected to one end of the two fixed plates 2 through the hinge shaft 5. The opposite surfaces of the two fixed plates 2 are respectively fixed on the two sides of the sleeve tube 3. The sleeve tube 3 is fitted onto the upper end of the climbing rod. The two upper fixing screws 4 pass through the through hole 25 set on the sleeve tube 3 and the through hole set on the upper end of the climbing rod, and are locked by nuts.

[0019] Combined with appendix Figure 1 , 3 Alternatively, a middle insertion rod 26 is provided at the upper end of the lower ladder rod 11. The middle insertion rod 26 is inserted into the lower end of the upper ladder rod 10. Two middle fixing screws 24 pass through the middle through hole 25 at the lower part of the upper ladder rod 10 and the middle through hole 25 on the middle insertion rod 26, respectively, and are then locked with nuts. A rubber surface 13 is provided on the lower part of the support rod 12. A lower insertion rod 28 is provided in the middle of the upper part of the support rod 12. The lower insertion rod 28 is inserted into the lower end of the lower ladder rod 11. Two lower fixing screws 14 pass through the lower through hole 27 at the lower part of the lower ladder rod 11 and the lower through hole 27 on the lower insertion rod 28, respectively, and are then locked with nuts.

[0020] Implement the self-locking ladder for maintaining steel pipe utility poles as described in this invention, combined with the attached... Figures 1 to 4 The method of using this invention is as follows: To facilitate carrying in a vehicle, this invention adopts an assembly method for on-site assembly. The lower ladder rod 11 is fitted onto the lower insertion rod 28 of the support rod 12 and fixed with two lower fixing screws 14. The lower end of the upper ladder rod 10 is fitted onto the middle insertion rod 26 of the lower ladder rod 11 and fixed with two middle fixing screws 24. The sleeve 3 is fitted onto the upper end of the upper ladder rod 10 and fixed with two upper fixing screws 4. In use, the support rod 12 is first placed on the ground about one meter away from the steel pipe pole. Then, by pressing the lower ladder rod 11, the steel pipe pole is inserted between the rubber plates 1 of the C-shaped self-locking clip, and the rubber plates 1 on the inner surface of the two quarter-circular plates 8 are attached to one side of the steel pipe pole. At this time, the steel pipe pole is self-locked by the action of the two springs 6. The lower ladder rod 11 can be used by one person holding the other to climb the ladder for work.

[0021] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to the scope of protection of the present invention. These equivalent forms also fall within the scope defined by the appended claims.

[0022] The parts of this invention not described in detail are prior art.

Claims

1. A self-locking ladder for maintaining steel pipe utility poles, comprising a C-shaped self-locking clip, a rubber plate (1), a straight plate (22), a double-ended bolt (18), a sleeve (17), a spring (6), a nut (7), a hinge shaft (5), a ladder rod, a foot pedal (9), and a support rod (12), characterized in that: The two ends of the C-shaped self-locking latch are respectively provided with an outer bending plate (15). The bottom of the C-shaped self-locking latch with a rubber plate (1) on the inner surface is provided with a gap (19). One end of the two straight plates (22) is fixedly connected to the end face formed by the bottom gap (19) of the C-shaped self-locking latch. The double-headed bolt (18) with a sleeve (17) in the middle is respectively passed through the middle hole of the two straight plates (22). Springs (6) and nuts (7) are respectively sleeved on the outside of the two straight plates (22) of the double-headed bolt (18). The other end of the two straight plates (22) is respectively hinged to the upper end of the ladder rod through the hinge shaft (5). Multiple support rods (12) are provided on both sides of the foot pedal (9).

2. The self-locking ladder for maintaining steel pipe utility poles according to claim 1, characterized in that: A retaining ring (23) is provided between the two springs (6) and the two nuts (7) of the double-ended bolt (18).

3. The self-locking ladder for maintaining steel pipe utility poles according to claim 1, characterized in that: The bottom of the C-shaped self-locking card is provided with a gap (19), which makes the C-shaped self-locking card form two quarter-circular plates (8). The two quarter-circular plates (8) are respectively provided with inner bending plates (16) at both ends of the opening, and the outer ends of the inner bending plates (16) are respectively provided with outer bending plates (15).

4. The self-locking ladder for maintaining steel pipe utility poles according to claim 1, characterized in that: The middle part of the two rubber plates (1) on the inner surface of the C-shaped self-locking card is a flat surface to the opening of the C-shaped self-locking card, and the inner surface of the middle part of the two rubber plates (1) on the inner surface of the C-shaped self-locking card to the gap (19) at the bottom of the C-shaped self-locking card is an arc surface.

5. The self-locking ladder for maintaining steel pipe utility poles according to claim 1, characterized in that: The other ends of the two straight plates (22) are fixedly connected to one end of the two inclined connecting plates (20), and the other ends of the two inclined connecting plates (20) are respectively connected to one end of the two connecting straight plates (21). The other ends of the two connecting straight plates (21) are respectively hinged to the upper end of the ladder rod through the hinge shaft (5).

6. The self-locking ladder for maintaining steel pipe utility poles according to claim 5, characterized in that: The other ends of the two connecting straight plates (21) are fixedly connected to one end of the two fixed plates (2) through the hinge shaft (5). The opposite sides of the two fixed plates (2) are fixed on the two sides of the sleeve pipe (3). The sleeve pipe (3) is fitted onto the upper end of the climbing rod. The two upper fixing screws (4) pass through the through hole (25) set on the sleeve pipe (3) and the through hole set on the upper end of the climbing rod, respectively, and are then locked by nuts.

7. The self-locking ladder for maintaining steel pipe utility poles according to claim 1, characterized in that: The climbing ladder includes an upper climbing ladder (10) and a lower climbing ladder (11). The lower end of the upper climbing ladder (10) is fixedly connected to the upper end of the lower climbing ladder (11), and the lower end of the lower climbing ladder (11) is fixedly connected to the middle of the upper surface of the support rod (12).

8. The self-locking ladder for maintaining steel pipe utility poles according to claim 7, characterized in that: A middle insertion rod (26) is provided at the upper end of the lower ladder rod (11). The middle insertion rod (26) is inserted into the lower end of the upper ladder rod (10). Two middle fixing screws (24) pass through the middle through hole (25) at the lower part of the upper ladder rod (10) and the middle through hole (25) provided on the middle insertion rod (26) respectively, and are then locked by nuts.

9. The self-locking ladder for maintaining steel pipe utility poles according to claim 7, characterized in that: A lower insertion rod (28) is provided in the middle of the upper surface of the support rod (12). The lower insertion rod (28) is inserted into the lower end of the lower ladder rod (11). Two lower fixing screws (14) pass through the lower through hole (27) at the bottom of the lower ladder rod (11) and the lower through hole (27) provided on the lower insertion rod (28) respectively, and are then locked by nuts.

10. The self-locking ladder for maintaining steel pipe utility poles according to claim 9, characterized in that: A rubber surface (13) is provided on the lower part of the support rod (12).

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